EP composite ultra-short curl-free fiber post-treatment production method and device
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A post-processing device and fiber crimping technology, which is applied in the heat treatment of artificial filaments, complete sets of equipment for producing artificial threads, stretch spinning, etc., can solve the problems of fiber quality that cannot meet the needs of high-end markets and the level of production line equipment is not high, and achieve The effect of reducing the mixing ratio, reducing production costs, and reducing the melting point of the cortex
Pending Publication Date: 2021-03-26
扬州石化有限责任公司
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At the same time, the equipment level of domestic production lines is generally not high, and the fiber quality cannot meet the needs of the high-end market
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[0036] The present invention will be further described below in conjunction with specific examples and accompanying drawings.
[0037] A post-processing production method of EP composite ultra-short non-crimp fiber, the steps of its post-processing method are as follows:
[0038] Step S1, pre-spinning strands bundled and bathed.
[0039] Step S1.1, bundle the pre-spun raw filaments according to a certain total denier of bundles, and control the tension of each filament bundle to be basically the same.
[0040] Step S1.2. Divide the total tow bundled in step S1.1 into three uniform pieces, and dip in a immersion bath with a length of 6m in hot water at 40°C to promote the relaxation of the molecular chains of the original silk and eliminate the internal stress.
[0041] Step S2, preliminary stretching of the tow.
[0042] Step S2.1. Preliminarily thermally stretch the tow after bathing in step S1.2 in hot water at 75° C. in a water bath with a length of 4 m, and the stretchi...
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Abstract
The invention discloses an EP composite ultra-short curl-free fiber post-treatment production method and device. The production method comprises the steps of pre-spinning protofilament bundling, dipping bath, primary tow stretching, secondary tow stretching, tow curling, tow laying, tow loosening and shaping, tow cutting, packaging and the like. The corresponding post-treatment device comprises abundling frame, a dipping bath tank, a water bath tank, a steam drafting box, an oiling machine, a yarn stacking machine, a curling machine, a drying setting machine, a cutting machine and a packagingmachine which are sequentially arranged on a workbench from left to right. According to the EP composite ultra-short curl-free fiber post-treatment production method and device, through specific post-treatment methods such as dipping bath, drafting, curling, shaping and cutting, the melting point of the skin layer of the prepared EP composite ultra-short curl-free fiber can be reduced, the bonding strength of non-woven fabric is improved, the doping proportion of the fiber is reduced, and the downstream production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of non-woven composite fibers, in particular to a post-processing production method and device for EP composite ultra-short non-crimp fibers. Background technique [0002] The market prospect of EP composite fiber is broad. EP fiber belongs to the key development varieties of my country's textile industry. The outstanding advantages and quality of EP fiber have been gradually recognized by people. Its application fields and market development prospects are immeasurable. In 2017, the global output of EP fiber was 1.88 million tons. In 2018 and 2019, the output was 2.08 million tons and 2.3 million tons respectively. It is estimated that the output in 2020 and 2021 will reach 2.55 million tons and 2.81 million tons. From the perspective of EP production growth, EP fiber, as a differentiated fiber variety, has an annual market growth rate of more than 10%. The EP fiber industry is in the ascendant and has broa...
Claims
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